The number one advantage of wall-hung toilets is the amount of space the units save over floor models, but the biggest disadvantage is the costly maintenance they require. Wall-hung toilets also enhance the interior design of a bathroom by removing undesirable fixtures and water outlets.
Wall-hung toilets are often built smaller than their floor-mounted counterparts and do not require external water outlets. This allows homeowners to install a toilet in the smallest bathrooms of the home without taking up too much space, leaving room for additional interior design projects.
The cost of a wall-hung toilet adds up over time as a result of inevitable breakdowns. The pressure inflicted on the wall causes the support system that secures the toilet to the wall to fail over time, which eventually loosens the toilet from the wall altogether. The job of reconstructing the wall well enough to hold the toilet once again requires the help of a professional, and because the damage is likely to repeat itself, maintenance costs may outweigh the benefits of wall-hung toilets for some homeowners. Along with breaking away from the wall, wall-hung toilets are more likely to leak than floor-mounted ones, which can lead to more costs if the leak requires professional repair work.